Acids, Bases and Salts (Class 7)

What is an Acid?

• Acids are the substances sour in taste and corrosive in nature.

• Acids are the substance sour in taste and not corrosive in nature.

• Acids are the substances bitter in taste and corrosive in nature.

• Acids are the substances sweet in taste and corrosive in nature.

Acids have _____ ions.

• H+

• OH-

• H-

• OH+

Vitamin C is actually ______ acid.

• Nitric Acid

• Ascorbic Acid

• Citrus Acid

• Tartaric Acid

Chemical name of Lime Water..

• Calcium Hydroxide

• Calcium Carbonate

• Calcium oxide

• Calcium bisulphate

Window cleaners generally contains...

• Magnesium Hydroxide

• Potassium Hydroxide

• Ammonium Hydroxide

• Sodium Hydroxide

Tamarind , Grapes , Unripe Mangoes , Cherries , Peach etc.. contains

• Lactic Acid

• Citric Acid

• Tartaric Acid

• Ascorbic Acid

Tags

NGSS.MS-PS1-1

Soap contains ______.

• Potassium Hydroxide

• Calcium Hydroxide

• Ammonium Hydroxide

• Magnesium Hydroxide

Which of these are Natural Indicators?

• Turmeric

• Red Cabbage

• Hibiscus

• All of these

Case Study:

There is farming field near your house. The farmer of that field is complaining that the plants and crops are not growing properly.. Farmer is telling that the soil is acidic.. What he should add to the soil to make it suitable for farming?

• Quick Lime

• Nitric Acid

• Hydrochloric Acid

• Citric Acid

HCL + NaOH = __________ + _________

• NaCl + H02

• Na2OH + H20

• NaCl + H20

• C12H22O11 + H20

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5